Let me add myself as another user who's having trouble logging into his legacy account.
My old username is either Unclever title or Unclevertitle. I forget if spaces in usernames were allowed on the old forums.
I had forgotten my old password and tried to reset it a few times, unfortunately I never received an email about it.
I eventually tried logging in via Google+, I may have imported the old data in the process but I'm not sure. Is there something on my profile that would indicate whether or not I had, or if it had been successful? I may have been trying to do this while it was broken.
Anyway, I'd rather use the username I'm most accustomed to using rather than the one I use for Google+ even if I can't retrieve my old account.
The same email address is associated with both my legacy account and with Google+.